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Katz v. United States 
United States Supreme Court, 1967. 

Statement of the Case:

      The United States is prosecuting an illegal gambler, Katz, for “transmitting wagering information by telephone,” when the main evidence against him was gathered by the FBI attaching a recording device to the outside of a public telephone booth where he placed his calls.

Procedure:

      Lower court convicted Katz of violating a Federal statute.  Appellate court affirmed the conviction because there was “no physical entrance into the ?’s area.”

Facts:

      Same.

Issue:

      Whether an illegal gambler can be convicted of “transmitting wagering information by telephone” when the evidence against him was gathered by the FBI attaching a recording device to the outside of a public telephone booth where he placed his calls.

Procedural Result:

      Judgment reversed for Katz.

Holding:

      The Government’s activities in electronically listening to and recording the ? while he spoke on a seemingly private phone constituted an illegal “search and seizure” within the meaning of the 4th Amendment.

Reasoning:

  • Whether there was penetration or the booth was “constitutionally protected” is not the issue.
  • The 4th Amendment protects people, not places.
  • Katz expected privacy of sound, not sight.  This was violated without penetration, so penetration is not necessary.
  • Physical presence or intrusion can not make a case turn one way or another.

Concurring:

  • Rule for Seizure:
  1. The person have exhibited an actual subjective expectation of privacy, and
  1. The expectation be one that society deems to be “reasonable.”
  • Ex. Public conversations not protected, but actions in one’s house are protected.

Dissent:

  • The 4th Amendment is being rewritten in order to “keep up with the times.”
  • The Amendment speaks to tangible things, not sounds.
  • Eavesdropping is not tangible, and, thus does not apply.

Additional Points:

  • With what criterion did the Court replace the “intrusion” requirement? 

      Violating the reasonable expectation of privacy.

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